Charles a



(No Model.)

C. A. BARNARD. y COMBINED EUEIEYINC AND DUST COLLECTING MACHINE ECEGRAIN, ec.

No. 460,078. Patented Sept. 22, 1891-.

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y rial which can be made by one operation of UNITED STATES PATENTOFFICE.

CHARLES A. BARNARD, OF MOLINE, ILLINOIS, ASSIGNOR TO THE BARNARD d:IJEAS MANUFACTURING OOIIIPANY, OF SAME PLACE.

LLECTING MACHINE FOR GRAIN, do.

SPECIFICATION forming part of Letters Patent No. 460,078, datedSeptember 22, 1891.

Serial No. 397,070. (No model.)

To all whom, it may concern:

Be it known that I, CHARLES A. BARNAED, of Moline, in the county of RockIsland and State of Illinois, have invented certain new and usefulImprovements' in Self-Contained Air-Belt Purifiers and Dust-Collectors;and I do hereby declare that the following is a full, clear, and exactdescription thereof, reference being' had to the accompanying drawing,and to the letters of reference marked thereon, which forms part of thisspecification.

This invention is a combined purifying and dust-collecting machine forgrain, dto., and is an improvement upon the machine for which LettersPatent of the United States No. 455,270 were granted to II. A. and O. A.Barnard the 30th day of June, 1891; and its object is to simplify theconstruction and to increase the number of gradings of the matethematerial; andit consists in the novel construction and combination ofparts hereinat`- ter clearly described and claimed.

The accompanying drawing represents a vertical longitudinal sectionalview-of my improved machine.

Referring to the drawing by letters, B designates the feed-hopper,having a feed-roll Z).

D is a settling-chamber in the upper part of the machine, having anapproximately iiat bottom, which is cleaned by traveling brushes orScrapers Z l, mounted on endless belts running over pulleys on shaftsjournaled in the main frame at the opposite ends of said chamber.

F is a small dust-settling chamber below hopper B and communicating attop through an air-separating device or trunk with chamber D. Y

H is a conveyer-trough in chamber F below hopper B, into which thematerial delivered from the hopper will fall and be carried out of themachine by conveyer I-I.

E is a large dust-chamber below chamber D and extending under chamber F,communieating at top with the rear end of chamber D and at its loweropposite end with chamber F through an opening f in the bottom thereof.

n n are brushes mounted on endless belts running overpulleys on shaftsat the bottom of chamber E and adapted to scrape matters depositedthereon. into chamber E through opening j', and M M are travelingbrushes for cleaning the bottom of chamber E, similarly mounted andadapted to sweep the material deposited on the bottom of chamber E intoa conveyer-trough K, whence it is carried out of the machine.v

G is a fan-chamber located below chamber D and above and to theinside ofchamber F, and communicating with the latter through a passage F, andalso communicating with chamber E, and G is a fan therein, which, whendriven by any suitable power, wiil create a circulation of air throughchamber F up through the air-separating device into chamber D, thenceinto chamber E back to the fan-chamber, while a secondary air-currentwill be established from chamber E into chamber E through openingfbackto the fan-chamber, the air-currents being indicated by the arrows.

All the aforementioned parts are constructed and adapted to operatesubstantially as shown and described in the patent aforesaid, and I willnow give a detailed description ot' the improvements.

Above trough H is a vertical air-trunk O, formed by the verticaltransverse boards c c, through which trunk communication is establishedbetween chambers F and D.

C is an inclined board below hopper B, adapted to catch the materialdelivered from the hopper and direct it through an opening c into trunkC, through which it falls into trough I-I,being subjected in falling tothe action of the air-current passing upwardly through said trunk, thedust and lighter grades of material being carried up into chamber D.

Below the rear end of chamberD is a bin I, in the bottom of which is aconvey'er t'. The bin is closed at sides, end, and bottom, and its topis formed by the bottom of chamber D, which is here formed of a numberof adjustable valves or transverse boards D D', which can be adj ustedso as to close the top of the bin or opened, as desired. An opening D2is, however, left at the center of the floor, so that material depositedto the left of said IOO opening will be swept into the bin whether thevalves be closed or not.

Beside bin I is formed another smaller bin or receptacle J, havingconveyer J in its bottom, and any material swept off the valves whenthey are closed will fall into bin J. A large adjustable Valve or boardJ2 is pivoted to the upper edge of the rear side of bin J and can beadjusted as indicated, so as to increase the width of the top of bin andnarrow the passage between chambers D and E,l as indicated in thedrawings.

The force or volume of the air-current is regulated by a valve f inpassage F or other convenient position.

In operation, 'the fan is started and air-circuits established, asindicated. The material is then fed from the hopper and distributed intothe trunk C, Where the first separation takes place. The heaviestmaterial, falling into trough II, is conveyed out of the machine. Thelighter materials and dust, dac., are carried up over into chamberD. Inturning into chamber D from trunk C the second-grade material falls ontothe floor of said chamber and is swept into bin I. The third grade ofmaterial falls onto valves D and into the mouth of bin J, so that twoseparate grades are delivered from bins I J, and by regulating Valves Dthe miller can regulate the quantity `of material collected in chamberI, as the heaviest is deposited nearest trunk C, and only the lightestmaterial will pass over the valves, where it will be caught in bin J,and by adjusting valve J2 the quality thereof can be further regulated,so that eventually when it is properly adjusted only dust and iiuffymatters escape into chamber E, where they are deposited, having time tosettle, owing to the large area of saidchamber and are eventuallycarried out by conveyer K. Before the air returns to theseparating-trunk, however, it is forced downward into chamber F, whereit is caused to move almost in a complete circle, so that the dustwillbe deposited therein and returned through opening finto chamber E,to be eventually discharged by conveyer K. By this construction thematerial is separated by the action of gravity into four grades, and theair thoroughly purified before returning it to the firstseparating-trunk.

Having described my invention, what I claim as new, and desire to secureby Letters Patent thereon, is`

l. The combination of the hopper, the vertical air-trunk beside thesame, the dust-chamber below the trunk, the settling -chamber above andto one side thereof, communicating with the dust-chamber through saidtrunk and the fan-chamber communicating with the Settling and dustchambers, atrough in the dust-chamber for receiving the material fallingthrough the trunk, and a fan, all substantially as specified.

2. The combination of the air-trunk, the dust-chamber below the samecommunicating therewith, a settling-chamber communicating with saidtrunk and having a receiving-bin at its end opposite the trunk, and aregulatin g-valve at top of said bin, and a fan-chamber and fan forcreating an endless air-current through the dust-chamber, trunk, andsettling-chamber, substantially as described.

3. The combination of the settling-chamber, the bin below the bottomthereof, the traveling brushes in the bottom of the chamber, and theseries of regulating-valves in the mouth of the bin forming part of theiioor of of the chamber, with the dust-chamber, fanchamber, fan, andair-trunk, substantially as described.

4. The combination of the settling-chamber, the pair of bins below andnear one end thereof, the dust-chamber below said settlingchamber,communicating therewith at the end adjoining the bins, a separatingdevice communicating with said settling-chamber at the end opposite thebins, and a fan-chamber communicating with said separating devlce anddust-chamber, and the fan therein, substantially as and for the purposespecified.

5. In a combined grader, purier, and dustcollector, the combination ofthe settlingchamber, the bin below the rear end of the same, thedust-chamber and air-trunk communicating with said settling-chamber atits opposite ends, the fan-chamber communicating with both thedust-chamber and air-trunk, the traveling brushes in said settling anddust chambers, and the conveyers in the bin and dust-chamber,substantially as described.

6. The combination of the settling-chamber, the pair of bins below andnear one end thereof, a dust-chamber below thesettlingchamber,communicating therewith, a separating devicecommunicating with said chamber, and a fan-chamber communicating withthe separating device and dust-chamber, and a fan therein, the brushesin said dust and settling chambers, and the conveyers in said bins,substantially as specified.

7'. The combination of the hopper, the vertical air-trunk beside thesame, the dust-settling chamber below the trunk, the settlingchamberabove and to one side thereof, communicating with the dust-chamberthrough said trunk, a receiving-bin at the end of said dust-chamber, avalve at the top thereof, a second dust-chamber below thesettling-chamber, a fan-chamber communicating with both dust-chambers,and means for removing the matters collected in the chambers and bin,substantially as specified.

8. In a combined grader, purifier, and dustcollector, the verticalair-trunk, a dust-chamber below the same,a trough in said chamberadapted to receive material falling through said trunk, asettling-chamber above and to one side of the trunk, communicatingtherewith, a receiving-bin below said chamber,the valves in the topthereof forming part of the floor of said chamber, a second dust-chamberbelow said bin, communicating with the set- IOO said settling-chamber,the fan-chamber communicating With both dust-chambers, the fan, andmeans for removing deposited matters from the chambers, bins, andtrongh,all substantiztlly as and for the purpose described.

In testimony that I claim the foregoing as my own I ztfx my signature inpresence of two Witnesses.

CHARLES A. BAENARD. p

Witnesses:

WM. C. BENNETT, LUTE H. PIKE.

